Phosphonic acid analogs of GABA through reductive dealkylation of phosphonic diesters with lithium trialkylborohydrides
作者:Sarwat Chowdhury、Niraj J. Muni、Nicholas P. Greenwood、David R. Pepperberg、Robert F. Standaert
DOI:10.1016/j.bmcl.2007.04.026
日期:2007.7
Lithium trialkylborohydrides were found to effect rapid monodealkylation of phosphonic diesters, and this reaction was applied to the synthesis of alkylphosphonic acid 2-aminoethyl esters [H(2)N(CH(2))(2)OP(OH)R, 4], a little-explored class of analogs of the inhibitory neurotransmitter gamma-aminobutyric acid (GABA). Compound 4a (R=Me) proved to be a potent antagonist at human rho1 GABA(C) receptors
发现三烷基硼氢化锂可实现膦酸二酯的快速单脱烷基化,并将该反应应用于烷基膦酸2-氨基乙基酯[H(2)N(CH(2))(2)OP(OH)R,4]的合成,是一种抑制神经递质γ-氨基丁酸(GABA)的类似药物,但尚未探索。化合物4a(R = Me)被证明是人类rho1 GABA(C)受体(在非洲爪蟾卵母细胞中表达的)的有效拮抗剂,IC(50)为11.1 microM,但在alpha(1)beta(2)处无活性)γ(2)GABA(A)受体。